Geothermal systems use the earth as a heat source and heat sink. In order to transfer heat to or from the house heat exchangers (ground loops) are installed in the ground. These consist of high density polyethylene plastic pipes. The loops are then connected to the heat pump and fluid circulated between them transferring the heat between the heat pump and the earth.
Well Water System
This type of design is only possible if there is sufficient ground water available in a well, lake or river in the area. The water must be of good quality. Local codes may limit the use of this system in certain areas. The system is open which means that water is pumped directly into the geothermal unit and then discharged either into a return well or a body of water. The water quality remains unaffected.
